this happened just before 9:00 tuesday night as the staff was preparing to close the thomas jefferson library in falls church. a 17-year-old says she noticed a man watching her as she studied. on her way out of the library, she told police the man followed her. she ducked into the bathroom. >> he grabbed her and assaulted her. she did fight back and she creamed and then he fled. >> usually, it is really safe here so it is surprising to see something like that happen. there is always some types of people that you have to watch out for. >> police say library employees have seen the man there before. he is described as appear african-american man between 5' 7" and 5' 10". he has a shaved bald head, a gap in his front tooth and a diagonal scar on his forehead. >>> police in fairfax county are stepping up their search and asking for your help in catching a serial fondler. he is described as hispanic, medium build with black hair and wearing a red cap. so far, nine women have reported attack business a man matching that description. the latest case happened last thursday in the 6000 block o